Bond Stress in Composite Columns
Bond Stress in Composite Columns
(OP)
I'm designing a composite column. It's a 30" diameter column with a W 14x102 encased. I'm trying to calculate the bond stress between the steel section and the concrete.
How do you calculate the bond stress for a tension and a moment force applied on the column?
Any help is greatly appreciated.
How do you calculate the bond stress for a tension and a moment force applied on the column?
Any help is greatly appreciated.






RE: Bond Stress in Composite Columns
For the bond stresses themselves you will have to look at the forces exerted by steel on concrete or viceversa at the contact nodes.
It is a 2 materials model, in the end, like you would model a pile embedded in homogeneous soil. The art resides in knowing the FEM program and setting well the proper engineering restrictions standing in the model.
RE: Bond Stress in Composite Columns
For a less complete but equally effective solution you disengage particular parts of the concrete from the tube insert and state the forces at the ends of the chunks and also the shear along the axis of the column for the cut chunk within the concrete; then the shear at the interface with the steel needs to make for any difference of forces standing.
RE: Bond Stress in Composite Columns